Finding the Fourth Proportional to 42,899.15, 64,357.32 and 14,820.23

Step by Step Solution

1. Step 1: Write the proportion equation
   42,899.15 : 64,357.32 = 14,820.23 : x
2. Step 2: Convert to fraction form
   42,899.15/64,357.32 = 14,820.23/x
3. Step 3: Cross multiply
   42,899.15x = 64,357.32 × 14,820.23
4. Step 4: Simplify right side
   42,899.15x = 953,790,284.58
5. Step 5: Solve for x
   x = 953,790,284.58/42,899.15
6. Step 6: Final answer
   x = 22,233.31